查询词典 stochastic

A binary composite hypothesis test model with unknown and stochastic parameters was constructed.The sequential probability ratio test with the uniformly most powerful effect was provided for white Gaussian process.This novel method was used to detect the distant series of pipe mass flow difference of leakages produced in stationary and non-stationary operation situations, respectively.

建立了以泄漏信号的幅值为随机参量的二元复合假设检验模型，提出了具有一致最大功效的序列似然比检验方法，并进行了平稳观测序列强泄漏信号和非平稳观测序列弱泄漏信号的检测。

For this type of new model,we study it mainly from these ways:First,we make further research on the nature features of their distributions;give out the probability distribution of the mixed stochastic variables,and the statistical features and the approximate distributions of the short-term individual risk models. Also the relationships between the total amount of compound compensation and individual one were investigated.At last we give out a kind of practical calculation method for the individual risk model.That is the calculation of the number of claims translating into the calculation of Vandermonde determinant.Second,a kind of risk model with main claims and by-claims is built under specific conditions.

对于这类有主副理赔的风险模型，我们主要从以下几个方面进行研究：首先，对短期个别风险模型和长期聚合风险模型的理赔总额的分布性质及特征做了较深入的研究，给出了混合型随机变量和的概率分布和短期个别风险模型理赔总额的统计特征与近似分布；在复合分布的框架下，研究了聚合风险模型理赔总额和个别理赔额之间的分布关系，给出了和个别理赔额对应的理赔次数的实用计算方法，即在总索赔额服从复合泊松分布时，把不同理赔额对应的理赔次数的计算转化为线性方程组的计算。

This paper discusses a variation equation problem in a class of singular stochastic control with stopping time,gives its solution under two different conditions,which is a one order continuous differentiable and concave function,and gives the exact form.

讨论了一类带停时的奇异型随机控制问题中的一个变分方程问题，并且在两种不同的情况下给出了该变分方程的解，即为一阶连续可导凹函数，并在两种情况下给出了此函数的具体形式。

The kernel of stochastic model is the construction of joint distribution or conditional probability distribution.

随机模型的核心问题是构建联合分布或条件概率分布。

Stochastic volatility model assumes that the conditional distribution of returns is normal during most of the empirical applications.

SV模型在实际应用中大多都假定以潜在波动为条件的收益的分布是正态的，本文分析并比较了正态SV模型和具有厚尾分布，特别是t分布的SV模型。

First, the backward Kolmogorov equation for the conditional reliability function and the Pontryagin equation for mean first-passage time and then- associated boundary and initial conditions are derived based on the stochastic averaging methods for quasi non-integrable, quasi integrable and quasi partially integ...

首先利用拟不可积、拟可积非共振及拟部分可积非共振Hamilton系统的随机平均法分别给出了研究该系统首次穿越问题的提法，包括计算条件可靠性函数的后向Kolmogorov方程及计算平均首次穿越时间的Pontryagin方程及其边值条件。

The book will give a detailed treatment of conditional expectation and probability, a topic which in principle belongs to probability theory, but is essential as a tool for stochastic processes.

书将给详细的处理有条件的预期和可能性，原则上属于概率论的一个题目，但是象随机的过程的一件工具一样必要

These methods would take a lot of constriction time and the measurement point is stochastic.

这种方法占用大量施工时间，并存在选测点的随意性。

At firstly assuming shear modulus is linear along depth, introducing differentiating operator of structure and using the stochastic vibration theory of continuative linear system, this paper studies the dynamic response problem of non-homogenize site soil.

首先假定土层的剪切模量随深度线性变化，引入结构微分算子，利用连续线性系统的随机振动理论，研究了非均匀场地土层地震的动力反应问题。

To solve continuous function optimization problems, a new stochastic search algorithm based on ant swarm intelligence is introduced .

引言蚁群算法是最近几年才提出的一种新型的模拟进化算法，2000年把蚁群算法扩展到了求解连续函数的优化问题[1]。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。